Perfume compositions – Perfume compositions – With specified extender
Patent
1993-05-28
1994-12-20
Reamer, James H.
Perfume compositions
Perfume compositions
With specified extender
512 4, A61K 746
Patent
active
053746147
ABSTRACT:
The invention concerns clear o/w microemulsions comprising a perfume oil, an aqueous phase and one or more surfactants with HLB between 9 and 18, and co-surfactants of which at least 0.5% of ionic co-surfactant. The weight ratio of perfume oil to total surfactant is between 0.85 and 2.5, and preferably above 1. The quantity of perfume oil is 0.01-40% w/w, preferably below 35%, of the microemulsion and the quantity of water at least 40% w/w, preferably at least 50%. The microemulsions comprise less than 10% preferably less than 5%, of alcohol. The surfactants are preferably of the nonionic type.
The microemulsions are very suitable for perfuming purposes where the amount of organic solvents should preferably be kept to a minimum, such as for perfuming skin or hair.
The invention also concerns surfactant/perfume mixtures suitable for preparing the clear o/w microemulsions.
REFERENCES:
patent: 4170655 (1979-10-01), Zeidler et al.
patent: 4299737 (1981-11-01), Meffert et al.
patent: 5079227 (1992-01-01), Handjani et al.
patent: 5246918 (1993-09-01), Behan et al.
patent: 5252555 (1993-10-01), Dartnell
patent: 5283056 (1994-02-01), Chung et al.
T. Joseph Lin, Microemulsions and Application of Solubilization in Cosmetics, Surfactants Science Series, vol. 16, 1985, pp. 29-53.
Behan John M.
Ness Jeremy N.
Traas Petrus C.
Vitsas Joannis S.
Willis Brian J.
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